// Copyright 2015 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef GIN_V8_ISOLATE_MEMORY_DUMP_PROVIDER_H_
#define GIN_V8_ISOLATE_MEMORY_DUMP_PROVIDER_H_

#include <string>

#include "base/trace_event/memory_dump_provider.h"
#include "gin/gin_export.h"

namespace gin {

class IsolateHolder;

// Memory dump provider for the chrome://tracing infrastructure. It dumps
// summarized memory stats about the V8 Isolate.
class V8IsolateMemoryDumpProvider
    : public base::trace_event::MemoryDumpProvider {
public:
    explicit V8IsolateMemoryDumpProvider(IsolateHolder* isolate_holder);
    ~V8IsolateMemoryDumpProvider() override;

    // MemoryDumpProvider implementation.
    bool OnMemoryDump(
        base::trace_event::ProcessMemoryDump* process_memory_dump) override;

private:
    void DumpHeapStatistics(
        base::trace_event::ProcessMemoryDump* process_memory_dump);

    IsolateHolder* isolate_holder_; // Not owned.

    DISALLOW_COPY_AND_ASSIGN(V8IsolateMemoryDumpProvider);
};

} // namespace gin

#endif // GIN_V8_ISOLATE_MEMORY_DUMP_PROVIDER_H_
